User manual TECUMSEH OH120-180

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Manual abstract: user guide TECUMSEH OH120-180

Detailed instructions for use are in the User's Guide.

[. . . ] TECUMSEH TECHNICIAN'S HANDBOOK This manual covers the following models: VH80, VH100, HH80, HH100, HH120, OH120-180 Model numbers are located on the engine shroud. Other illustrated Tecumseh 2-Cycle Engine, 4-Cycle Engine and Transmission manuals; booklets; and wall charts are available through Tecumseh. For complete listing write or call 8 TO 18 HP CAST IRON FOUR CYCLE ENGINES Contents Page CHAPTER 1. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Rods are coated with lead which will slightly oxidize in storage, this oxidation must be removed. FOR ENGINE MODELS HH80, HH100 and HH120 and VALVE-IN-HEAD ENGINES. SLIP FIT WRIST PIN OIL VAPOR PICK-UP HOLE FOR ENGINE MODELS VH80 and VH100 ENGINE ROTATION OIL FEED HOLE Torque to correct specifications 110-inch pounds (12. 43 Nm). After initial torque use a drift and a hammer (13 oz. ) (390 ml) and strike the rod bearing cap above each lock nut. This will seat the cap releasing some torque on the lock nuts. Retorque lock nuts to specifications. OIL VAPOR PICK-UP HOLE THROUGH BOLT INSTALL WITH MATCH MARK FACING OUT AND OIL DIPPER AS SHOWN SPECIFICATION SECTION FOR BEARING SIZE AND NUT TORQUE The vertical crankshaft 8 and 10 H. P. engines have a connecting rod with two lube holes. This rod is not interchangeable with the horizontal connecting rod. The above requirements listed for a horizontal crankshaft rod also apply to the vertical crankshaft engines connecting rod. 35 SECTION 3. Crankpins should be examined for wear, scoring, or out of-round. If any of these conditions are noted, replace the crankshaft. Lubricate the crankpin generously before attaching the connecting rod. This will prevent damage during the initial run-in after reassembly. EXAMINE CRANKPIN FOR WEAR OR DAMAGE REPLACE IF DAMAGED Note the chamfer tooth on the crankshaft gear. This tooth is used as a reference mark to be matched with the timing mark on the camshaft. Remove gear with a conventional puller after the roller bearing has been removed. The gear and the bearing may be removed simultaneously, but much difficulty may be encountered. Roller bearing must be heated before it is installed. NOTE: If a damaged gear is replaced, the mating gear should also be replaced. Example: If the camshaft is damaged and replaced, the crankshaft gear should be replaced. CHAMFER TOOTH CRANKSHAFT GEAR USE BEARING SEPARATOR AND PULLER TO REMOVE TAPERED BEARING The vertical VH80 and VH100 (without oil pump) oil slinger is located on the crankshaft. It is locked in position between the bearing and the crank gear and maintains that position due to a slot in the gear and a stamped bulge in the slinger. This alignment is necessary to direct the lubricant up into the engine at a closely engineered angle. Note the pickup trough and the stiffening rib. View B shows the trough alignment in correct relation to the crankcase journal. [. . . ] TORQUE SPECIFICATIONS VALVE-IN-HEAD TORQUE SPECIFICATIONS INCH Cylinder Head Bolts Connecting Rod Screw or Nut Mounting Flange Cylinder Cover Screw Cylinder Cover Flywheel End Flywheel Nut P. T. O. Shaft to Flywheel Spark Plug Intake Pipe to Cylinder Carburetor to Intake Pipe Air Cleaner Elbow to Carburetor Air Cleaner Bracket to Elbow Air Cleaner Bracket to Carburetor Tank Bracket to Cylinder (5/16'' Lower) Tank Bracket to Cylinder (1/4'') Starter-Recoil-Top Mount Starter-Electric-Straight Drive Rope Start Pulley Mounting Screws Rocker Arm Box to Cylinder Head Rocker Arm Cover and Breather (Screw to Stud) Rocker Arm Adjusting Screw Lock Nut Rocker Box Cover to Mtg. Stud Magneto Stator Mounting Screw Blower Housing to Baffle or Cylinder Housing Baffle to Cylinder Blower Housing Extension to Cylinder Governor Rod Clamp to Rod (Screw and Nut) Governor Rod Clamp to Lever (Screw and Nut) Ground Wire to Terminal Toggle Stop Switch Nut Oil Drain Plug 3/8 18 Oil Drain Cap Oil Fill Plug (Large Diameter) 180 - 240 86 - 110 100 - 130 120 - 160 600 - 660 100 - 125 220 - 280 72 - 96 48 - 72 25 - 35 15 - 25 15 - 25 150 - 200 96 - 120 40 - 60 140 - 170 60 - 75 80 - 90 15 - 20 50 - 70 20 - 30 72 - 96 48 - 72 72 - 96 72 - 96 15 - 25 15 - 20 5 - 10 10 - 15 80 - 100 35 - 50 Hand Tighten Nm 20. 3 - 27. 1 9. 7 - 12. 4 11. 3 - 14. 7 13. 6 - 18. 1 67. 8 - 74. 6 11. 3 - 14. 1 24. 9 - 31. 6 8. 1 - 10. 9 5. 4 - 8. 1 2. 8 - 4. 0 1. 7 - 2. 8 1. 7 - 2. 8 17. 0 - 22. 6 10. 9 - 13. 6 4. 5 - 6. 8 15. 8 - 19. 2 6. 8 - 8. 5 9. 0 - 10. 2 1. 7 - 2. 3 5. 5 - 8. 0 2. 3 - 3. 4 8. 1 - 10. 9 5. 4 - 8. 1 8. 1 - 10. 9 8. 1 - 10. 9 1. 7 - 2. 8 1. 7 - 2. 3 . 6 - 1. 1 1. 1 - 1. 7 9. 0 - 11. 3 4. 0 - 5. 7 Hand Tighten 73 CHAPTER 11. EDUCATIONAL MATERIALS AND TOOLS VIDEO PROGRAMS CARBURETOR TROUBLESHOOTING BOOKLET 695907 This booklet is designed as a quick reference to carburetion problems and related repair procedures. 695015 Carburetor Troubleshooting. [. . . ]

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